after years of balancing my enlarger over the hand basin and trays in the bathtub I moved into a new house with a dedicated darkroom... and boy am I happy

I only had one set of taps installed over my sink. I have one of those extendable swing arm taps usually found in laundry&#39;s. I have a hose on it as well and have found that pretty much works ok for me. I connect the hose using general garden connectors to either my film tank for washing or my home-brew print washing tray, or use it to wash trays and the sink. It reaches the far end if the sink. I can see an extra set of taps might be useful if the print washer is connected and you want to mix up some chemistry. Currently I unplug the washer, get the water required then plug it back in (not that I do this much, as I usually mix chems before starting the washer)

Regarding your sink arrangements... I would only query what happens in the middle? By having two seperate ones I can imagine the joining walls will get in the way of where you want to put your trays if you want to print large. My sink is 2000mm x 700mm (6 1/2 ft x 2 1/4ft) and covers the whole benchtop. It has 100mm sides (4inches) and at one end it has a deep well( for washing stuff - see attached &#39;pic&#39. One problem that also has a sort of good side benefit is my bench and the bottom of the well area are all flat (horizontal), so the water doesn&#39;t actually run to the drain. The added complication is that since it&#39;s made of acrylic sheet, the drain sits a little proud and so, when the print washer is running and the water is running into the well (I sit it in the well) , it fills the well area with (a few mm deep) water before going down the drain. The upside of this is I can rinse my hands easily even though I only have the one tap (although the water has been thru the wash tray) I&#39;ve contemplated fixing this design flaw but have almost convinced myself it is a feature

Since you mention a Jobo, don&#39;t forget power outlets on the wet side. I also have a light bulb over the washing area which has a pull string switch. Other things that I can think of that you might consider are solid mounting points if you&#39;re going to wall mount your enlarger.